1 ounce equals approximately 28.3495 grams. This means if you have an ounce of something, it’s about 28.35 grams in weight.
To convert ounces to grams, you multiply the number of ounces by 28.3495. Since 1 ounce is exactly 28.3495 grams, multiplying any ounce value by this number gives the weight in grams. For example, 2 ounces would be 2 x 28.3495, which is 56.699 grams.
Conversion Result for 1 Ounce
Converting 1 ounce results in 28.3495 grams.
Conversion Tool
Result in grams:
Conversion Formula
The conversion formula from ounces to grams is: grams = ounces x 28.3495. This works because 1 ounce is defined as exactly 28.3495 grams. To convert, you multiply the number of ounces by this constant. For example, 3 ounces: 3 x 28.3495 = 85.0485 grams.
Conversion Example
- Convert 2 ounces:
- Step 1: Take the number 2 (ounces).
- Step 2: Multiply 2 by 28.3495.
- Step 3: 2 x 28.3495 = 56.699 grams.
- Result: 2 ounces equal 56.699 grams.
- Convert 5 ounces:
- Step 1: Use 5 as the number of ounces.
- Step 2: Multiply 5 by 28.3495.
- Step 3: 5 x 28.3495 = 141.7475 grams.
- Result: 5 ounces are 141.7475 grams.
- Convert 0.5 ounces:
- Step 1: Take 0.5 ounces.
- Step 2: Multiply 0.5 by 28.3495.
- Step 3: 0.5 x 28.3495 = 14.17475 grams.
- Result: 0.5 ounces equal approximately 14.1748 grams.
- Convert 10 ounces:
- Step 1: Use 10 ounces.
- Step 2: Multiply 10 by 28.3495.
- Step 3: 10 x 28.3495 = 283.495 grams.
- Result: 10 ounces are 283.495 grams.
Conversion Chart
The table below shows grams for various ounces from -24.0 to 26.0. Read the row to find the ounces and look across to see their grams equivalent. Use this chart to quickly estimate weights without calculation.
| Ounces | Grams |
|---|---|
| -24.0 | -681.588 |
| -23.0 | -652.544 |
| -22.0 | -623.5 |
| -21.0 | -594.456 |
| -20.0 | -565.412 |
| -19.0 | -536.368 |
| -18.0 | -507.324 |
| -17.0 | -478.28 |
| -16.0 | -449.236 |
| -15.0 | -420.192 |
| -14.0 | -391.148 |
| -13.0 | -362.104 |
| -12.0 | -333.06 |
| -11.0 | -304.016 |
| -10.0 | -274.972 |
| -9.0 | -245.928 |
| -8.0 | -216.884 |
| -7.0 | -187.84 |
| -6.0 | -158.796 |
| -5.0 | -129.752 |
| -4.0 | -100.708 |
| -3.0 | -71.664 |
| -2.0 | -42.62 |
| -1.0 | -13.576 |
| 0.0 | 0.0 |
| 1.0 | 28.3495 |
| 2.0 | 56.699 |
| 3.0 | 85.0485 |
| 4.0 | 113.398 |
| 5.0 | 141.7475 |
| 6.0 | 170.097 |
| 7.0 | 198.4465 |
| 8.0 | 226.796 |
| 9.0 | 255.1455 |
| 10.0 | 283.495 |
| 11.0 | 311.8445 |
| 12.0 | 340.194 |
| 13.0 | 368.5435 |
| 14.0 | 396.893 |
| 15.0 | 425.2425 |
| 16.0 | 453.592 |
| 17.0 | 481.9415 |
| 18.0 | 510.291 |
| 19.0 | 538.6405 |
| 20.0 | 566.99 |
| 21.0 | 595.3395 |
| 22.0 | 623.689 |
| 23.0 | 652.0385 |
| 24.0 | 680.388 |
| 25.0 | 708.7375 |
| 26.0 | 737.087 |
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Conversion Definitions
Ounce
An ounce is a unit of weight used mainly in the US and UK, equal to 28.3495 grams. It is used to measure the mass of small quantities of materials like food, precious metals, and pharmaceuticals.
Grams
Grams are a metric unit of mass in the International System, with 1 gram equivalent to one-thousandth of a kilogram. It measures weight or mass of objects, commonly used worldwide for precise measurements in cooking, science, and commerce.
Conversion FAQs
How precise is the conversion from ounces to grams?
The conversion uses the exact value of 28.3495 grams per ounce, providing precise results for most practical purposes. Slight variations might occur depending on rounding or measurement context, but for general use, this is accurate.
Can I convert ounces to grams without a calculator?
Yes, by using the approximate conversion factor of 28.35 grams per ounce, multiplying the number of ounces by this factor gives a close estimate. For exact calculations, using the full 28.3495 value is recommended.
Why is the ounce used in some countries but not others?
The ounce originates from imperial and customary measurement systems used mainly in the US and UK. Countries adopting the metric system prefer grams or kilograms, making ounces less common outside specific regions or industries.
What is the difference between an ounce and a fluid ounce?
An ounce measures weight or mass, while a fluid ounce measures volume. They are different units; for example, fluid ounces are used for liquids, whereas ounces are used for solids.
Are all ounces equal in different contexts?
In weight measurement, ounces are standard, but in other contexts like food packaging or precious metals, the ounce might be used differently, such as troy ounces for gold and silver, which are slightly heavier (~31.1035 grams).